Page 209 - 2015 Professional Signage Catalog

MOUNTING OPTIONS (MOST COMMON):
1. Stud: threaded rods extending around 2” beyond backs of letters or plaques.
Blind mount is common with most plastic and metal letters and plaques. Installed with Mounting Pattern and adhesive. Anchors may be required with heavier products.
2. Pad: plastic pad extending beyond back of letter, typical with plastic letters, install product direct to wall without having to drill any holes. Installed with use of split stencil or spacing guide. Silicone is a common adhesive to hold such letters.
3. Combination or Combination All: Stud through pad(s). Installed by drilling holes and adhering pads to mounting surface. Mounting pattern required.
2%/•" O.C.
Installation Suggestions
4. Double Faced Tape: Designed for interior flat letters – typically plastic. Used alone or with an adhesive.
5. Double Rail: Letters mounted to two rails (metal or plastic). Rails can be flat bars or C-Channels. Installed by section – typically by word. Typical rails are maximum 96” long, available painted or anodized. Round letters may have to be flattened on the bottom.
6. Bottom or Top Rail: Letters (3/8” thick or greater), plastic or metal, drilled and tapped on the top or bottom to mount onto a flat or C-Channel rail. Letters over 8” high will require a tie-back (not-included) to help secure.
7. Bottom or Top Stud: Letters (3/8” thick or greater), drilled and tapped for studs. Mounted to rail, channel, etc. by customer.
ADHESIVES:
Many mounting options for letters and plaques will require some type of adhesive to properly install. Gemini sells tubes of Chem-calk 1200 or GE RTV108 that are great for many small, light weight products. Both of these silicone adhesives are designed to join a variety of con- struction materials such as glass, metal, wood and plastic. As a general rule, a good quality silicone can be used to mount most lighter- weight letters with studs and pads. The key to properly using silicone is to use with installation hardware that is rough (such as studs) or has pads with holes. Silicone alone is not a good bonding agent for flat plastic or metal items.
Metal Products: while silicone will work for many smaller metal letters and plaques, if in doubt as to the strength of your install – use something stronger than silicone such as a good construction grade adhesive, epoxy or even mortar (when going into brick or block mortar).
Application Temperature: most silicones can be installed at temperatures ranging from -35oF to 140oF, providing that the surface is clean, dry and frost free.
Cure Times: this will depend on the amount of moisture present in the atmosphere, but generally the silicone will continue to cure for at least 24 hours. The higher the temperature and humidity, the faster the cure time and conversely with lower temperatures and humidity.
MOUNTING SURFACE MATCH
The letter or plaque installer is responsible for properly matching sealants to mounting surfaces - Gemini can only make suggestions or rec- ommendations. Always consult with an adhesive expert such as 3M or IPS for the most up-to-date adhesive matches and recommendations should you have any questions or concerns. Product – surface combinations will vary and may require not only separate adhesives, but at times additional mounting hardware such as anchors or even structural support.
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Cast letters have built-in stud bosses
in line to hit mortar joints on standard brick.
Other